/*
 * jPOS Project [http://jpos.org]
 * Copyright (C) 2000-2015 Alejandro P. Revilla
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

package org.jpos.transaction.participant;

import org.jpos.core.Configurable;
import org.jpos.core.Configuration;
import org.jpos.core.ConfigurationException;
import org.jpos.transaction.TransactionParticipant;

import java.io.Serializable;
import java.util.Random;

public class Delay implements TransactionParticipant, Configurable {
	long prepareDelay = 0L;
	long commitDelay = 0L;
	long abortDelay = 0L;
	Random random;

	public int prepare(long id, Serializable context) {
		sleep(prepareDelay);
		return PREPARED;
	}

	public void commit(long id, Serializable context) {
		sleep(commitDelay);
	}

	public void abort(long id, Serializable context) {
		sleep(abortDelay);
	}

	public void setConfiguration(Configuration cfg) throws ConfigurationException {
		prepareDelay = cfg.getLong("prepare-delay");
		commitDelay = cfg.getLong("commit-delay");
		abortDelay = cfg.getLong("abort-delay");
		random = cfg.getBoolean("random") ? new Random() : null;
	}

	void sleep(long delay) {
		if (delay > 0L) {
			try {
				Thread.sleep(random != null ? (long) random.nextDouble() * delay : delay);
			} catch (InterruptedException ignored) {
			}
		}
	}
}
